164 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. fBull. 



bury (Eames & C. C. Godfrey), New Milford (Eames & E. 

 H. Austin), Salisbury (!\Irs. C. S. Phelps). Also in waste 

 ground at Hartford (H. S. Clark). Aug. — Oct. Except in 

 the last locality it appears to be native. Specimens from Alil- 

 ford (Eames) show a transitional form approaching the forma 

 cristatiun (Engelm. & Gray) Robinson, Polygonum crista- 

 ttim Engelm. & Gray. 



Polygonum cuspidatum Sieb. & Zucc. (sharp-pointed). 

 Polygonum ZuccarinU Small. 

 Japanese Knotweed. 



Rare. Escaped from cultivation to waste places : Stoning- 

 ton and Xew London (Graves), New Haven (J. N. Bishop), 

 Simsbury (Bissell), Bridgeport (Eames). Sept. Adventive 

 from Japan. 



An effective plant in masses, producing abundant bloom. 



Polygonum sachalinense Schmidt. 

 Sacaline. 



Rare. Tolland, well established in a field and along a 

 roadside (Weatherby & Bissell). Aug. — Sept. Native of 

 eastern Asia. 



A coarse forage and ornamental plant recently introduced 

 into this country ; perfectly hardy, but of little value where 

 other crops can be grown. 



FAGOPYRUM Hill. Buckw^heat. 



Fagopyrum esculentum ^loench (eatable). 

 Fagopyrum Fagopyrum Karst. 

 Buckwheat. Beech-wheat. 



Occasional. Fields and roadsides, escaping from cultiva- 

 tion but not persisting. June — Oct. ; fruit Aug. — Oct. Fugi- 

 tive from Europe. 



Cultivated for its seeds which are ground for food or fed 

 to poultry. The flowers are much frequented by honey-bees. 



POLYGONELLA Michx. Jointweed. 



Polygonella articulata (L.) ]\Ieisn. (jointed). 

 Sand, Coast or Seaside Jointweed or Knot Grass. 



Frequent on barren sands in the Connecticut Valley and 



